5
ELECTRIC WIRING WORK
General instructions
•
All field supplied parts and materials and electric works must
conform to local codes.
•
Use copper wire only.
•
Follow the ‘Wiring diagram’ attached to the unit body to wire
the outdoor unit, indoor units and the remote controller. For
details on hooking up the remote controller, refer to the
"Installation manual of the remote controller".
•
All wiring must be performed by an authorized electrician.
•
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
•
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.
•
Refer to the installation manual attached to the outdoor unit
for the size of power supply electric wire connected to the
outdoor unit, the capacity of the circuit breaker and switch,
and wiring instructions.
Electrical characteristics
NOTE
•
For details, refer to "Electrical data".
Specifications for field wire
NOTE:
Shows only in case of protected pipes. Use HO7RN-F in
case of no protection.
Power supply
terminal board (1)
Single phase
power supply (2)
NOTE
•
The incline of attached drain hose should be 75mm or less
so that the drain socket does not have to stand additional
force.
•
To ensure a downward slope of 1:100, install hanging bars
every 1 to 1.5m.
•
If unifying multiple drain pipes, install the pipes as shown
in figure 9. Select converging drain pipes whose gauge is
suitable for the operating capacity of the unit.
1
T-joint converging drain pipes
2. After piping work is finished, check if drainage flows
smoothly.
•
Open the water inlet lid, add approximately 2l of water
gradually and check the drainage flow.
Method of adding water: see figure 12
1
Portable pump
2
Drain pipe
3
Service cover
4
Inspection opening
5
Service drain outlet (with rubber plug) (Use this outlet to drain
water from the drain pan)
6
Plastic watering can (Tube should be about 100mm long.) (Adding
water through air discharge outlet)
7
Bucket (Adding water from inspection opening)
WHEN ELECTRIC WIRING WORK IS FINISHED
Check drainage flow during COOL running, explained in chapter
"TEST OPERATION".
WHEN ELECTRIC WIRING WORK IS NOT FINISHED
•
Remove the control box lid and change the emergency switch
above the PC board assembly of the indoor unit from “Normal”
to “Emergency”. Connect the single-phase power supply
(50 Hz, 230 V) to connections No. 1 and No. 3 on the power
supply terminal board and confirm drain operation. Be sure to
change the switch before turning on the power.
•
Be aware that the fan will turn during the operation.
•
After confirming drainage, turn off the power and be sure to
change the emergency switch back to “Normal”.
see figure 13
1
Switch box lid (1)
2
Power supply
3
Power supply terminal board
4
Rubber bush A
5
Clamp A
6
Switch box lid (2) with wiring diagram label
7
Transmission wiring
8
Terminal board for transmission wiring
9
Rubber bush B
10
Clamp B
11
Outside of the unit
12
Inside of the unit
13
Cable (power supply or transmission wiring)
14
Opening for the cable
15
Small sealing
Between
indoor units
Unit-Remote
controller
Wire
H05VV-U4G
(NOTE 1)
Sheathed wire
(2 wire)
Size (mm
2
)
local codes
0.75 - 1.25
Length
–
Max. 500m
